Скачать или смотреть Wrapper classes in java tutorial-34 latest (2020)

Wrapper classes in java: Wrapper classes in java are encapsulated primitive data types. boolean, char, float, double, long, int, byte and short all of these are primitive data types in Java. Java is Object Oriented Programming language and everything in java is supposed to be a Class, but for the performance purpose, these data types are not kept as Classes. There can be certain situations when we need to use these primitive data types as Classes only. Like we can not use primitive data types in Collections(ArrayList, LinkedList, Vectors, etc.) We can use wrapper classes of these primitive data types to handle such situations.
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